So far it's unclear if the claims are a significant threat, as the information posted thus far by the hackers includes a document dated April 28, 1999, that Symantec describes as defining the application programming interface (API) for the virus Definition Generation Service. However, a second post entitled ‘Norton AV source code file list’ includes a list of file names reputedly contained within Norton AntiVirus source code package.

Symantec said it is still in the process of analyzing the data in the second post, a Symantec spokesperson said.